Fastener.



M. F. CARR.

FASTENER.

APPLICATION FILED DEC. 8. i917.

Patented Apr. 15,1919.

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MosEs F. CARR, or NEWTON, MASSACHUSETTS, ASSIGNOR To CARR FASTENER COMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION or MAINE.

FASTENER.

Specification of Letters Patent. Patented Apr. 15, 1919.

Application filed December 8, 1917. Serial N10. 206,330.

To all whom it may concern: Be it known that I, MosEs F. CARR, a

Newton, in the county, of Middlesex, Commonwealth of Massachusetts, (whose postoflice address is care of Carr Fastener Company, Cambridge, Massachusetts) have invented an Improvement in Fasteners, of

.which the following description, in connection with the accompanying drawings, is a specification, like characters on the draw ings representing like parts.

This invention pertains to improvements in fasteners, and more particularly, though not exclusively, to improvements 1n separable fasteners for automobile curtains wherein the stud is adapted to be attached to the curtain and the socket to be carried in a recess in the automobile body, theexterior surface of the socket preferably being substantially flush with the exterior surface of the body.-

In the drawings I Figure 1 is a front elevation of a pre- 7, one of which is preferably adapted to engage with a preferably annular resilient jaw 9 in the front of the socket 6, and the other of which is adapted to engage with projecting means typified by the annular ring 10 located near the back of the socket. The stud 6 may be attached to the curtain 5 in any suitable way, but-I prefer to attach it by the screw-threaded stud 11 passing through the curtain and adapted to engage a knob or button 12 exterior to the curtain. The head 13 of the stud 4: is preferably rounded on the edges so that when the stud is to be entered in the socket, the annular jaw 9 will be forced outwardly so that it can pass over the stud 4. Similarly, the interior shoulder of the groove 7 is preferably rounded so that as the Stud is entered in the citi-' zen of the United States, and a resident of socket the passage of the groove 7 of the Stud past the jaw 9 will not prevent the full entrance of the stud in the socket. When the stud is completely entered in the Socket, as shown, the jaw 9 rests in the groove 6 and the annular projection 10 is opposite the groove 7 so that, if pressure is exerted outwardly on the curtain in any non-axial direction, the projection 10 will engage the shoulder provided by the groove 7 and head 13, thus preventing accidental Withdrawal of the stud from the socket. When, on the other hand, the stud is directly Withdrawn from the socket, the head 13 can pass through the projecting means 10 without engagement with the Shoulder. If the stud is for any reason accidentally partially Withdrawn from the socket, the spring jaw 9 will engage the groove 7 thus'providing one form of double locking means, or means for yieldingly holding the stud and socket in a plurality of determined positions.

While I have shown and described a preferred form of one embodiment of my invention, it will be understood thatchanges involving omission, substitution, alteration and means being adapted to enter the secondgroove in said stud when the stud is tipped relative to the socket, while permitting withdrawal of said stud from said socket without engagement of said second groove by said unyielding projecting means.

2. A separable fastener comprising, in combination, a stud providing a plurality of grooves; a socket adapted to receive said stud comprising a tubular shell having a groove interiorly thereof adjacent the entrance end thereof, an annular spring in said groove, said spring engaging one of the grooves in said stud, and means interiorly of said shell and located a substantial dlstance from said spring for engagement With a second groove in said stud.

3. A separable fastener comprising, in

stud comprising a tubular shell having a groove interiorly thereof adjacent the entrance end thereof, an annular spring in said groove, said spring engaging one of the grooves in said stud, and unyielding means lntcriorly of said shell and located a substantial distance from said spring for engagement With a second groove in said stud.

In testimony whereof, I have signed my name to this specification.

MOSES F. CARR. 

